DP83950BNU NSC [National Semiconductor], DP83950BNU Datasheet - Page 61

• Manufacturer Part Number: DP83950BNU
• Manufacturer: NSC [National Semiconductor]

D(2 0)
8 0 RIC Registers
Page Select Register ((All Pages) Address 10H)
The Page Select register performs two functions
1 It enables switches to be made between register pages
2 It provides status information regarding the Event Logging Interrupts
Device Type Register (Page 0H Address 11H)
This register may be used to distinguish different revisions of RIC If this register is read it will return a different value each for
DP83950 revisions (Contact National Semiconductor for revision information ) Write operations to this register have no effect
upon the contents
Bit
D3
D4
D5
D6
D7
D7
FC
D7
0
R W
R W
R
R
R
R
R
D6
HC
D6
0
PSEL(2 0)
Symbol
D5
LC
resv
HC
LC
FC
FF
D5
0
D4
FF
(Continued)
PAGE SELECT BITS When read these bits indicate the currently selected Upper Register Array
Page Write cycles to these locations facilitates page swapping
RESERVED FOR FUTURE USE
FLAG FOUND This indicates one of the unmasked event recording latches has been set
LOW COUNT This indicates one of the port event counters has a value less than 00FF Hex
HIGH COUNT This indicates one of the port event counters has a value greater than C000 Hex
FULL COUNTER This indicates one of the port event counters has a value equal to FFFF Hex
D4
0
resv
D3
D3
0
PSEL2
D2
D2
0
PSEL1
D1
61
D1
X
PSEL0
D0
Description
D0
X